Hi, Right I may have abit of a problem, I have just checked our Certificate Authority server and we have had a certificate issued out to all of our machines. No one knows why!... This Cert wasn't there a week ago and shouldn't be there. Can this effect anything? no-one knows what this certificate authenticates against ("apart from a remote computer") What is the best way in removing this certificate from the clients? is it just a case of revoking the certificate? Sorry new to CA's so don't have much knowledge and new to the company which doesn't help. Also is there a way to see locally on the machine if the particular cert has been removed because all I can see is a cert from the CA server. no more details of the new cert? Thanks in advance. Mac

Certs are used for authentication. I would check the security on your CA if people are issuing certs without approval. You can revoke the cert if you don't need it. If the cert was issued to the computer you can use the Certificates MMC snapin for the local computer account and check under "Personal" the issued cert should be here.

Thanks for the reply, I have revoked the certs and I will be looking at the security of this server. I could not see the cert in the personal folder though by the way?

Hello, Thank you for your post. This is a quick note to let you know that we are performing research on this issue. Best Regards Elytis ChengElytis Cheng TechNet Community Support

Hi, There are 2 types of certficate store. one for user and another one for computer. so please check it from both stores. Best regards, Jason Mei Please remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.

Hi, There are 2 types of certficate store. one for user and another one for computer. so please check it from both stores. Best regards, Jason Mei Please remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.

Hi, please send me an update on this issue. thanks !Best regards, Jason Mei Please remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.